Dario Paiva

Benjamin Moreira, 21, of Elmhurst, was convicted of second-degree murder, first-degree manslaughter, tampering with physical evidence and fourth-degree criminal possession of a weapon on Friday in the July 2010 death of 27-year-old Dario Paiva.

Kristian Paiva recounted his brother’s final moments Saturday as police were gathering evidence in Queens, hoping it will lead to an arrest in a fatal subway stabbing that killed 27-year-old Dario Paiva.